Re: sort pairs
- To: mathgroup at yoda.physics.unc.edu
- Subject: Re: sort pairs
- From: keiper
- Date: Thu, 11 Nov 93 07:01:32 -0600
> How can I sort pairs of values -- basing the sort on the
> first value and then break ties on the second value in
> the pair.
Just use Sort[ ]. That is what it does. For example:
In[5]:= data = Flatten[Table[{j, 4-i}, {i, 3}, {j, 3}], 1]
Out[5]= {{1, 3}, {2, 3}, {3, 3}, {1, 2}, {2, 2}, {3, 2}, {1, 1}, {2, 1},
> {3, 1}}
In[6]:= Sort[%]
Out[6]= {{1, 1}, {1, 2}, {1, 3}, {2, 1}, {2, 2}, {2, 3}, {3, 1}, {3, 2},
> {3, 3}}
Jerry B. Keiper
keiper at wri.com
Wolfram Research, Inc.